Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.

Skills you'll gain: Apache Kafka, Command-Line Interface, Data Pipelines, Java, Java Programming, Enterprise Application Management, Real Time Data, Unix Commands, Data Integration, Distributed Computing, Performance Tuning, Software Installation
★ 4.4 (12) · Intermediate · Course · 3 - 6 Months

Skills you'll gain: Keyword Research, Search Engine Optimization, Target Audience, Content Optimization, Blogs, Web Analytics and SEO, Content Strategy, Web Content, Social Media Marketing
★ 4.3 (6) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: PHP (Scripting Language), Model View Controller, Restful API, Secure Coding, Web Development, Object-Relational Mapping, Web Applications, Full-Stack Web Development, Development Environment, Software Testing, Development Testing, Back-End Web Development, Security Controls, API Design, Application Frameworks, Database Management, Web Frameworks, Application Programming Interface (API), Application Security, Database Development
★ 4.2 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Engineering, Network Troubleshooting, Development Environment
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Spring Framework, Java Programming, Java, Application Frameworks, Java Platform Enterprise Edition (J2EE), Maintainability, Scalability, Extensible Markup Language (XML)
★ 3.4 (8) · Intermediate · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Search Engine Optimization, Performance marketing, Social Media Marketing, Pay Per Click Advertising, Content Marketing, Marketing Automation, Social Media Strategy, Online Advertising, Product Promotion, Blogs, Paid media, Marketing Strategies, Promotional Strategies, Target Audience
Mixed · Course · 1 - 3 Months

Skills you'll gain: Cyber Threat Intelligence, Threat Modeling, Zero Trust Network Access, Security Management, DevSecOps, Incident Response, Threat Detection, Identity and Access Management, Application Security, Cybersecurity, Data Security, Microsoft Azure, Cyber Security Strategy, Security Strategy, IT Security Architecture, Cloud Security
Advanced · Course · 1 - 3 Months

Skills you'll gain: Linux Servers, Linux Administration, Command-Line Interface, Bash (Scripting Language), Apache, Performance Tuning, Operating System Administration, Shell Script, Linux Commands, Web Servers, Server Administration, Unix Shell, Systems Administration, System Monitoring, Network Monitoring, Scripting, Servers, Unix Commands, Application Servers, File Systems
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Geospatial Information and Technology, Environmental Monitoring, Image Analysis, Spatial Analysis, Environmental Science, Data Preprocessing, Data Analysis, Analytical Skills, Network Monitoring, Data Transformation, Data-Driven Decision-Making, Data Integrity
Beginner · Course · 1 - 4 Weeks

University of Alberta
★ 4.9 (51) · Beginner · Course · 3 - 6 Months

Skills you'll gain: Data Validation, Data Quality, SQL, Data Integrity, Verification And Validation, Unit Testing
Advanced · Course · 1 - 4 Weeks

Università di Napoli Federico II
Skills you'll gain: Derivatives, Financial Market, Securities (Finance), Investments, Futures Exchange, Risk Modeling, Financial Modeling, Portfolio Management, Numerical Analysis, Simulations, Markov Model, Mathematical Modeling, Simulation and Simulation Software, Probability, Probability Distribution
Intermediate · Course · 1 - 3 Months